EP0935042A2 - Method and device for actuating and /or monitoring a motor driven door - Google Patents

Abstract

Control is carried out during one or more opening and/or closing movements of at least one leaf (1a,1b). Monitoring the activation zone (19) from the sensor unit (9), adjustments are carried out in evaluation and control (23,25, fig.3). The effective zones (19) are enlarged so sensitivity is increased in such a way that self activation is reached, and adjustments carried out, effecting a safety distance for preventing self activation.

Description

The invention relates to a method and an apparatus to control and / or monitor a motor driven wing, in particular a door, a window or comparable facilities. These are usually hereinafter also as a means of recording and monitoring designated facilities provided as they also under the terms "sensors" in general or for example "Motion detectors" are known in particular. Furthermore, there is usually an evaluation and control device provided that built separately or together can be. Ultimately, this is what drives a wing controlled.

Those generally referred to below as sensors Monitoring and detection means, as is usually the case are used to control and monitor doors, differ in terms of their technical function and / or application.

Motion detectors usually work on the double principle, i.e. that a signal in the monitoring and Trigger area of the door to be monitored (regardless of whether it is a hinged door, a sliding door, revolving door or the like) is emitted and the reflected radiation is received and evaluated. The radiation falls on a moving person, it results in dependence the relative movement of the moving person on the spotlight a frequency shift to or from this. Basically can such motion detectors based of ultrasound, infrared radiation or according to the radar principle work.

In addition, so-called status detectors are also known, which, also on different technical principles, often work in the infrared range. Here are in the Rule condition detectors known, the so-called passive infrared radiation evaluate. By measuring the in the monitoring and Radiation emitted by the Sensors and detectors can change depending on the Intensity of radiation a corresponding evaluation and control of the opening and closing Door can be made.

Furthermore, so-called present detectors, in particular known for securing crushed and sheared edges. The simplest detector of this type is the so-called Light barrier, for example in sliding door arrangements is used for protection. Furthermore, one Series of devices, buttons and push button sensors known that often based on active infrared technology. As well are also devices with ultrasound, laser technology in this area and image recognition (CCD).

Since the presence detectors mentioned above are more expensive than Motion detectors are and also only a very limited one Detection field, i.e. a very limited surveillance and Trigger field are already combined Control and monitoring devices and devices proposed been a motion detector and a Active infrared button included.

All previous monitoring and control devices for moving sashes, especially doors, but always point the disadvantage that either the monitoring and trigger area is not ideally chosen, if in particular so-called in the area to be monitored Dead zones exist, or the risk of one The door triggers itself.

According to DE 36 18 692 C2 is used to monitor a door area proposed one on both sides of the door passage larger and a smaller surveillance zone to provide an opening and closing movement of the monitored To make door leaves with higher security in particular if there is something to be monitored while leaving Door area already a next person this Area is approaching.

According to US Pat. No. 5,142,152, a sensor device is proposed with a threshold sensor that detects the immediate doorway area monitored and under Use another sensor that covers the area in front of the immediate doorway monitored.

But even with the last two known sliding door systems and associated control devices, there remain dead zones that create certain moments of danger.
The object of the present invention is therefore to provide an improved method and an associated device for controlling and / or monitoring a driven leaf, in particular a door or the like.

The object is achieved according to the method corresponding to that in claim 1 or 2 and with respect to Device according to that specified in claim 17 Features resolved. Advantageous embodiments of the invention are specified in the subclaims.

The main problem with sensors and motion detectors after The state of the art are malfunctions caused by self-triggering caused. In the case of a poorly set one The closing door sensor can trigger an opening pulse trigger, which opens the door again before it is completely closed is. Such a door never comes back Rest as they constantly before reaching the final Move the closed position back to the open position becomes.

It is often attempted to do this, for example poor antenna characteristics and / or existing ones Reflections provoked self-release of the door through adjustment and / or different orientation prevent the sensor or motion detector, for example in that its antenna is adjusted and / or its side lobes through optimal installation of the surface-mounted devices be shielded. But this inevitably also has as a result, the monitoring and triggering area is reduced is so that undesirable in dangerous peripheral areas Dead zones can arise in which there is no personal security more is guaranteed.

In contrast, the invention proposes that the electronics a self-calibration to check the status "Close door" to avoid self-triggering. The Self-calibration to change the effective monitoring and triggering area, especially in the form of a Changing the sensitivity of the sensor is preferred thanks to a fully automatic teach-in procedure determined. During an opening and closing movement of at least single or multi-leaf doors or Window or the like. The gain of the received Sensor signals slowly changed, e.g. increased until the too monitoring door dedicates itself. Then the Sensitivity set back by a certain factor, until there is no longer any risk of self-triggering.

In a preferred embodiment of the invention also provided that the monitoring and / or triggering area according to the wing or to be monitored Door status is changed. Basically, the monitoring and triggering area is chosen to be large, so that in the door area no or no relevant personal hazards Dead zones can arise or exist. It is provided that only during the closing process at least a smaller dimensioned and / or changed position Monitoring and triggering area becomes effective, in such a way that a self-triggering and switching of the wing to be monitored avoided in the opening direction becomes.

This can preferably be done in that at least one Switch to a smaller dimensioned and / or changed position Monitoring and triggering area during the Closing process of the door to be monitored is provided. However, a multi-stage switchover can also be preferred be provided during the closing process, that depending on the progressive closing process the monitoring and triggering area is always optimal is followed up that prevents self-triggering becomes. In other words, the moving door leaves (for example with a single-leaf swing door, a single or multi-leaf sliding door) always outside triggering via the sensors Monitoring and triggering area.

Continuous tracking (reduction) is also preferred. and changing the monitoring and triggering area be carried out during the closing process.

After the closing process has ended, another Switching to the maximum large monitoring and Trip range can be made for maximum security to ensure.

A corresponding switchover and tracking of the from Door status dependent monitoring and triggering area during the opening state of a wing it is not necessary because here anyway by external triggering over the sensor device used a switch to the open position was triggered.

Especially with intensity-measuring or also reflection-measuring Sensor devices can be a reduction the monitoring and triggering area by reducing the sensitivity of the sensor device and / or the Evaluation and / or control electronics are carried out.

The self-calibration provided according to the invention has further advantages if depending on the door status the size and / or the trigger zone or the sensitivity of the sensor is changed, because this can especially the at least two-stage or at least two different monitoring and triggering areas and / or Control and sensitivity considerations Monitoring device optimal with regard to its monitoring and release area during the closing movement a door can be preset. Predefined in terms of program and / or set or reloadable or installable can then, for example, the desired optimal large monitoring and triggering area for the others States of the door to be monitored (such as closed position, Opening position) etc. can be preset.

Figur 1 :

eine schematische Frontansicht einer zweiflügeligen Schiebetüranordnung mit Sensoreinrichtung;

Figur 2 :

eine schematische Horizontalschnittdarstellung durch das Ausführungsbeispiel gemäß Figur 1 mit unterschiedlichen Überwachungs- und Auslösebereichen;

Figur 3 :

eine schematische Schaltungsanordnung unter Einbezug einer Sensoreinrichtung und einer Antriebseinrichtung;

Figur 4 :

eine entsprechende Darstellung zu Figur 2 während des Schließvorganges;

Figur 5 :

eine entsprechende Darstellung zu Figur 2 für den Fall einer einflügeligen Schwenktür im geschlossenen Zustand; und

Figur 6 :

eine entsprechende Darstellung des Ausführungsbeispieles nach Figur 5 bei geöffnetem Türflügel.

The invention is discussed below using two exemplary embodiments for the case of a sliding door and for the case of a double door. The individual shows:

Figure 1:

a schematic front view of a two-leaf sliding door arrangement with sensor device;

Figure 2:

is a schematic horizontal sectional view through the embodiment of Figure 1 with different monitoring and trigger areas;

Figure 3:

a schematic circuit arrangement including a sensor device and a drive device;

Figure 4:

a corresponding representation to Figure 2 during the closing process;

Figure 5:

a corresponding representation to Figure 2 for the case of a single-leaf swing door in the closed state; and

Figure 6:

a corresponding representation of the embodiment of Figure 5 with the door open.

In Figure 1 is a two-winged schematic representation Sliding door 1 with two door leaves 1a and 1b in the closed Condition shown. The door is in a wall 5 intended.

The door leaves are kept movable in a known manner via a running rail which runs horizontally above the door opening and is designated by the reference numeral 7 in FIG. 1 and is moved, for example, by an electric motor (not shown in detail) with the interposition of a rotating toothed belt between the open and closed positions.
In the exemplary embodiment shown, a sensor device 9 is provided above the door opening, ie in the area of the suspension and running arrangement of the movable door leaves 1a and 1b, preferably in the center above the door opening. Sensor arrangement or sensor device 9 is understood to mean all suitable monitoring and / or detection devices with which, from a technical point of view, moving objects (in particular people) and / or immovable objects can be detected or detected. Deviating from this sensor arrangement 9, a plurality of individual sensors 9 ^′ can also be provided over a larger part of the width of the door or over the entire door width or beyond or a continuous sensor bar. In addition and alternatively, the sensors can also be centered on the door wings themselves at the top and / or bottom and / or rather on the closing edges 13 and / or on the respectively opposite outer edges 15 and / or on the wall 5 itself (for example also extending over a vertical path , for example as a vertical bar) may be provided or arranged.

The sensor arrangement 9 comprising a single sensor or a plurality of sensors 9 ^′ , for example in the form of infrared sensors or radar sensors etc., makes it possible, for example, to monitor the monitoring and triggering area located in front of the door and shown in dashed lines on the floor 17 (FIG. 2).

A person approaches the door and comes into the area the monitoring and trigger zone 19, so the Sensor arrangement (in the case of a radar sensor in the form of the received rays reflected from the object; in the event of an infrared sensor through the infrared radiation) corresponding signal received, which according to the schematic circuit arrangement according to Figure 3 in a Evaluation stage 23 evaluated and in a subsequent one Control stage 25 is implemented to a drive assembly 27 to open the sliding door 1. Deviating 3, the evaluation and control stage 23, 25 also combined into a uniform level 24 be. It can either be hard-wired, but preferably consists of a microprocessor-controlled Electronics.

The trigger zone 19 is shown flat in the figures. However, the trigger zone is to be understood spatially. she extends in the space above the drawn Area. In different parallel planes to the floor it can also be of different sizes.

As with the illustration according to FIGS. 1 and 2 can be seen, the monitoring and triggering zone 19 is so large chosen so that they cover the entire door area Door leaf 1a and 1b monitored in the closed state, so that no or no relevant dead zones 20 arise and yourself very strongly sideways on the door Moving people can be recognized early. In Figure 2 are the dead zones 20, for example, for the case a smaller dimensioned monitoring and triggering zone Drawn 19 '.

This large surveillance and dashed line in Figure 2 Tripping area 19 can be in the state "doors closed "as well as in the state" doors open " can be easily maintained.

Even when the door is in the "open doors" state, it can large monitoring and triggering area 19 maintained stay, which is not a problem anyway, because the doors already open in the "open doors" state are located. The door leaves 1a, 1b are in the open position Condition and should generally be given after the expiry of a Waiting time from the open state again Closed position can be moved because in the large dimension Monitoring and triggering area 19 none itself Person moving towards the door via the sensor device is detected, it is first from the large monitoring and triggering zone 19 to a small monitoring and Trip zone 19 'switched. The trigger range of the Sensor arrangement 9 is therefore in this exemplary embodiment designed in two stages, switching to "small Monitoring and triggering zone 19 'by appropriate Switching the sensor device from "high sensitivity" to "low sensitivity" in the evaluation and / or Control levels 23, 25 and 24 are accomplished can.

By switching to a small monitoring and tripping zone 19 'or low sensitivity when open Condition of the door immediately before the closing process is initiated door security is not reduced, since nobody is in the coverage of the big Monitoring and triggering zone 19 with high sensitivity located. In Figure 2 is the small monitoring and Trigger zone 19 'with low sensitivity preferred sensor device in the form of a radar 9 is drawn, from which it can be seen that during the Closing process through the door leaves 1a, 1b a self-release is avoided since the door wing is not in the Drive in reduced monitoring and triggering zone 19 ' can. From this it can be seen that the trajectory the monitoring and triggering area of the at least one door leaf 19 cuts in the usual operating mode, wherever when switching to a smaller monitoring and Trigger area of the at least one door wing in the locked monitoring and triggering zone 19 'no longer drives in.

For the sake of completeness it is mentioned that by suitable technical and / or mechanical measures if necessary also no or not only a reduction in Dimensioning of the monitoring and triggering area 19 occurs during the closing process, but alternatively or additionally a change of position and position of the trigger zone 19 is possible in such a way that a self-trigger is avoided.

After finally reaching the closed position again by another trigger signal towards the large one, shown in dashed lines in FIGS. 1 and 2 Monitoring and triggering area 19 at e.g. high sensitivity switched. Should during the Closing a person with reduced sensitivity enter the monitoring and triggering area 19 'switched to small dimensions, this becomes about the sensor device is dedicated and the evaluation and Control level immediately the drive device in Opened position reversed, already at the same time or afterwards, after reaching the open position of the door leaves or at the latest before the expiry of a preset or predetermined waiting time before initiation of a next closing sequence, again on large surveillance and Trigger range 19 (high sensitivity) switched becomes.

As can be seen from the illustration according to FIG the large triggering and monitoring zone 19 in this embodiment designed so that - especially when open Door - the one attached to one side of the wall Sensor device 9 even through the open door in a certain area in the opposite room Can perform surveillance. If necessary and necessary can be on the opposite side of the wall (on the Another sensor device is provided be in order to mirror the others accordingly Monitor access to the door in the other room.

A further refinement can be achieved in that not just a two-stage, but also a multi-stage Tracking from the large to the small release area 19, 19 ' is carried out.

This is indicated schematically in FIG. 4 for the case that after initiating the closing movement of the Door leaves 1a, 1b (in Figure 3 they are about half closed) from the originally large trigger zone 19 first on a medium-sized trigger zone 19a and after Reach the middle closed position on the small one Monitoring and triggering zone 19 'is switched.

Finally, in a further variation, the change from the large monitoring and triggering area 19 to the small monitoring and triggering area 19 'too readjusted continuously during the door closing process and be tracked so that in any condition the largest possible surveillance zone and the greatest possible sensitivity the sensor device is given without self-triggering was provoked.

Figures 5 and 6 show the corresponding states and Conditions for the case of a swing door 1c, where here the different opening and closing positions 31a, 31b, 31c for the swivel wing 1c which are different large monitoring and trigger zones 19a, 19b, 19c assigned are. Immediately before the last closing process of the swing wing 1c, the monitoring zone is set to "0" posed, i.e. switched off.

After the door has been closed, the system switches back to the large monitoring and triggering area 19 (FIG. 5).

To during the closing process of the door - if in the area the back of the door should approach a person - Switching back in the opening direction can be done here additional sensor device 9 '' can be provided, such as this is indicated in the vertical top view in FIG. 5.

For the proper and safe functioning of such automatic Doors is the correct setting of the triggering elements especially during the closing process of the door of central importance.

Are the sensors too weak and / or in the trigger area 19 designed too weak or too small during the closed position, so an insensitive door does not result or opens too late, or where the dead zones are too large and so that there are moments of danger. With too sensitive Attitude there is the aforementioned risk of self-triggering, what the unwanted door malfunction with it would bring.

In order to make the optimal setting, a is preferred Fully automatic teach-in procedure carried out.

In particular in the case of a sensor device 9 in the form of a Radars are in the evaluation and / or control stage 23, 25, preferred by the at least one or by the two stages includes a microprocessor and a gain of Radar signal set. During some when starting up the opening and closing movements to be carried out on the door the gain will be of a lower value slowly raised until the door closes over the Sensor device itself detected. Then the sensitivity preferably postponed by a certain factor, until no risk of self-triggering more exists.

With a multi-stage reduced or changed position Trigger area (for example, according to Figure 4) for the differently selected trigger zones 19 preferred depending on the respective closed position in the automatically executable teach-in procedure the optimal settings for determining the optimal Tripping zone determined and preferred in the Control and evaluation stage 23, 25 can be stored.

If necessary, a supplementary manual correction can also be made automatic adjustment preferably by a not shown in the drawing permanent or switchable input device, preferably using keyboards.

So if there is still a manual influence on the setting and achieving an optimized closing and opening movement of a wing is preferred the entire arrangement is constructed and intended that no readjustment to the electronics or the sensor yourself (i.e. directly on the hardware) must, but only via the control panel (control input device) the desired change or manual correction or a general change of the previous one Results achieved in the teach-in process can.

Even if no teach-in procedure is carried out should, preferably via an input device, the desired Changes or dates can be entered.

Should occur during the operation of the door Sensitivity drifts or due to other environmental influences or disadvantageously change the tripping characteristic, the teach-in method described above can thus be performed again. Then it comes to one corresponding automatic correction adjustment and Adaptation to the current optimal operating conditions, to avoid self-triggering of the door.

The last described optimal in a teach-in procedure Self-calibration to be set and carried out of the monitoring and triggering area 19 or Sensitivity of the sensor device applies equally for motion detectors as well as for static sensors.

In principle, the teach-in procedure can also be reversed be made by a large gain factor supplied self-timer and then slowly decrease the sensitivity until self-triggering is no longer provoked.

Claims (27)

Method for controlling and / or monitoring a driven wing (1a, 1b, 1c), in particular a door (1), a window or the like, with a sensor device (9) for monitoring and detecting at least one wing (1a, 1b, 1c) assigned monitoring and triggering area (19), characterized in that in a teach-in process during one or more opening and / or closing movements of the at least one wing (1a, 1b, 1c) starting from a smaller monitoring and and triggering zone (19) and / or a lower sensitivity of the sensor device (9) is adjusted in the evaluation and control stage (23, 25) such that the effective monitoring and triggering zone (19) is enlarged and / or the sensitivity of the Sensor device (9) is increased in such a way until self-triggering is achieved and that subsequently a behavior causing a safety distance to avoid self-triggering is made. Method according to the preamble of claim 1, characterized in that in a teach-in process during some opening and closing movements of the at least one wing (1a, 1b, 1c) starting from a larger monitoring and triggering zone (19) or a higher sensitivity the sensor device (9) is adjusted in the evaluation and control stage (23, 25) in such a way that the effective monitoring and triggering zone (19) is reduced and / or the sensitivity of the sensor device (9) is reduced until self-triggering is avoided. A method according to claim 2, characterized in that after reaching a setting in which self-triggering is avoided, a subsequent adjustment which causes a safety distance to avoid self-triggering is subsequently carried out. Method according to one of claims 1 to 3, characterized in that the amplification of the radar signal can be set by a microprocessor provided in the evaluation and / or control electronics (23, 25; 24). Method according to one of Claims 1 to 4, characterized in that the teach-in method is started automatically when a wing (1a, 1b, 1c) to be monitored is started up. Method according to one of Claims 1 to 5, characterized in that the values determined in the teach-in method for determining the monitoring and triggering zone (19) and / or the sensitivity of the sensor device (9) can be changed and / or corrected manually . Method according to one of claims 1 to 6, characterized in that before the start, at the beginning or during the closing process of the leaf (1a, 1b, 1c) in the sensor device (9) and / or the evaluation and / or control stage (23 , 25) a switchover is carried out in such a way that a large or initial monitoring and triggering area (19) and / or a higher sensitivity is switched over to a smaller and / or position-changing monitoring and triggering area (19 ') or a lower sensitivity is that during the closing process of the leaf (1a, 1b, 1c) a self-release and reversal of the leaf (1a, 1b, 1c) in the open position is prevented. Method according to one of claims 1 to 7, characterized in that the reversal from a large and / or initial monitoring and triggering zone (19) to a smaller and / or position-changing monitoring and triggering zone (19 ') in time connection with the Start of the closing process and / or in the local context from the closed position of the wing (1a, 1b, 1c). Method according to one of claims 1 to 8, characterized in that the reversal from a large and / or initial monitoring and triggering zone (19) to a smaller and / or position-changing monitoring and triggering zone (19 ') at least in one stage, preferably in several stages is made. Method according to one of claims 1 to 9, characterized in that the reversal from a large and / or initial monitoring and triggering zone (19) to a smaller and / or position-changing monitoring and triggering zone (19 ') is carried out continuously. Method according to one of claims 1 to 10, characterized in that a sensor device (9) consisting of at least one motion detector, preferably in the form of a radar arrangement, is used. Method according to one of claims 1 to 11, characterized in that the sensitivity during the closing process of the wing (1a, 1b, 1c) is switched from an initial higher sensitivity to a lower sensitivity. Method according to Claim 12, characterized in that the switchover from high to low sensitivity takes place at least in two stages, preferably in several stages or continuously, during the progressive closing process of the leaf (1a, 1b, 1c). Method according to one of claims 1 to 13, characterized in that in the temporal and / or position-dependent connection with the reaching of the closed position of the at least one wing (1a, 1b, 1c), a switchover to large and / or initial triggering and / or Monitoring area (19) and / or high sensitivity is made. Method according to one of claims 1 to 14, characterized in that the large monitoring and triggering area (19) and / or the high sensitivity of the sensor device (9) is set during the wing state "closed wing" and "opened wing". Method according to one of claims 1 to 15, characterized in that the setting of the at least one smaller monitoring or triggering area (19) or the at least one lower sensitivity of the sensor device (9) is set in an automatic teach-in process. Device for controlling and / or monitoring a driven wing (1a, 1b, 1c), in particular a door (1), a window or the like, with a sensor device (9) for monitoring and / or detecting an at least one wing (1a, 1b , 1c) assigned monitoring and triggering area (19) and with an evaluation and / or control stage (23, 25; 24), via which the data coming from the sensor device (9) are evaluated and a motor drive device (27) for moving the Wing (1a, 1b, 1c) are supplied, according to one of claims 1 to 16, characterized in that the evaluation and / or control stage (23, 25; 24) is constructed such that the setting of at least one smaller monitoring and Tripping range (19 ') or the setting of at least a lower sensitivity of the sensor device (9) can be carried out in an automatic teach-in process. Apparatus according to claim 17, characterized in that the teach-in method can be carried out during one or more opening and / or closing movements of the at least one wing (1a, 1b, 1c) such that, starting from a smaller monitoring and triggering zone ( 19 ') and / or a lower sensitivity of the sensor device (9) an adjustment in the evaluation and / or control stage (23, 25; 24) can be carried out in such a way that the effective monitoring and triggering zone (19) is enlarged and / or Sensitivity of the sensor device (9) is increased until a self-triggering can be achieved, and that an adjustment causing a safety distance to avoid self-triggering can then be carried out or carried out. Apparatus according to claim 17 or 18, characterized in that the teach-in method can be carried out during one or more opening and / or closing movements of the at least one wing (1a, 1b, 1c) in such a way that starting from a larger monitoring and Tripping zone (19 ') and / or a higher sensitivity of the sensor device (9) an adjustment in the evaluation and / or control stage (23, 25; 24) can be carried out such that the effective monitoring and tripping zone (19) is reduced and / or the sensitivity of the sensor device (9) is reduced until self-triggering is avoided. Device according to one of claims 17 to 19, characterized in that the values determined in the teach-in process can be subjected to a manually entered or predetermined correction or change in order to avoid self-triggering. Device according to one of claims 17 to 20, characterized in that the sensor device (9) and / or the evaluation and / or control stage (23, 25; 24) are constructed such that before the start, at the beginning or during the closing process of the wing (1a, 1b, 1c), a switchover in the sensor device (9) and / or the evaluation and / or control stage (23, 25; 24) can be carried out in such a way that from a large or initial monitoring and triggering area (19th ) and / or a higher sensitivity to a smaller and / or position-changing monitoring and triggering area (19 ') or a lower sensitivity is switched such that during the closing process of the leaf (1a, 1b, 1c) a self-release and reversal of the leaf (1a, 1b, 1c) is prevented in the open position. Apparatus according to claim 21, characterized in that the reversal from a large and / or initial monitoring and triggering zone (19) to a smaller and / or position-changing monitoring and triggering zone (19 ') and / or from a higher to one lower sensitivity takes place at least in one stage, preferably in multiple stages. Apparatus according to claim 17, characterized in that the reversal from a large and / or initial monitoring and triggering zone (19) to a smaller and / or position-changing monitoring and triggering zone (19 ') and / or from a higher to one lower sensitivity takes place continuously. Device according to one of claims 17 to 23, characterized in that the sensor device (9) consists of a motion detector, preferably in the form of a radar arrangement. Device according to one of claims 17 to 24, characterized in that the evaluation and / or control stage (23, 25; 24) and / or the sensor device (9) are constructed in such a way that the entire sensor system is connected in time with the closing process of a higher initial sensitivity can be switched to a lower sensitivity, at least in one step or continuously. Device according to one of claims 17 to 25, characterized in that the evaluation and / or control stage (23, 25; 24) and / or the sensor device (9) are constructed in such a way that they are related to the achievement in a time-dependent and / or position-dependent manner the closed position of the at least one wing (1a, 1b, 1c) can in turn be switched to a large and / or initial triggering and / or monitoring area (19) and / or a high sensitivity can be carried out. Device according to one of claims 17 to 26, characterized in that the evaluation and / or control stage (23, 25; 24) and / or the sensor device (9) during the wing state "closed wing" and "open wing" to a large one Monitoring and triggering area (19) and / or a high sensitivity of the sensor device (9) is set.

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